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- /* Disable specific event for thread.
- Copyright (C) 1999,2001,2002,2003 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@redhat.com>, 1999.
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
- #include <stddef.h>
- #include "thread_dbP.h"
- td_err_e
- td_thr_clear_event (const td_thrhandle_t *th, td_thr_events_t *event)
- {
- td_err_e err;
- psaddr_t eventmask;
- void *copy = NULL;
- LOG ("td_thr_clear_event");
- /* Fetch the old event mask from the inferior and modify it in place. */
- err = DB_GET_FIELD_ADDRESS (eventmask, th->th_ta_p,
- th->th_unique, pthread, eventbuf_eventmask, 0);
- if (err == TD_OK)
- err = DB_GET_STRUCT (copy, th->th_ta_p, eventmask, td_thr_events_t);
- if (err == TD_OK)
- {
- uint32_t idx;
- for (idx = 0; idx < TD_EVENTSIZE; ++idx)
- {
- psaddr_t word;
- uint32_t mask;
- err = DB_GET_FIELD_LOCAL (word, th->th_ta_p, copy,
- td_thr_events_t, event_bits, idx);
- if (err != TD_OK)
- break;
- mask = (uintptr_t) word;
- mask &= ~event->event_bits[idx];
- word = (psaddr_t) (uintptr_t) mask;
- err = DB_PUT_FIELD_LOCAL (th->th_ta_p, copy,
- td_thr_events_t, event_bits, idx, word);
- if (err != TD_OK)
- break;
- }
- if (err == TD_NOAPLIC)
- {
- err = TD_OK;
- while (idx < TD_EVENTSIZE)
- if (event->event_bits[idx++] != 0)
- {
- err = TD_NOEVENT;
- break;
- }
- }
- if (err == TD_OK)
- /* Now write it back to the inferior. */
- err = DB_PUT_STRUCT (th->th_ta_p, eventmask, td_thr_events_t, copy);
- }
- return err;
- }
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